Midland Industries
Lead-Free Brass FIP x FIP Union
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
Lead-Free Brass FIP x FIP Union
Lead-Free Brass FIP x FIP Unions provide a straight female-to-female threaded connection while allowing the piping joint to be disconnected without rotating or removing long sections of connected pipe. Female pipe-thread connections on both ends allow the union to connect to compatible male-threaded pipe, nipples, valves, adapters, and other piping components.
Lead-free brass construction provides durability and corrosion resistance for compatible potable-water, plumbing, agricultural, construction, industrial, water-transfer, and general fluid-handling applications where lead-free components are required.
Product Highlights
- Lead-free brass construction
- Straight union configuration
- Female pipe thread x female pipe thread
- FIP x FIP connection type
- Allows convenient disconnection of threaded piping
- Useful for service, maintenance, and equipment replacement
- Suitable for compatible potable-water and general plumbing applications
Technical Specifications
| Product Type | Union |
|---|---|
| Material | Lead-Free Brass |
| Connection 1 | Female Pipe Thread (FIP) |
| Connection 2 | Female Pipe Thread (FIP) |
| Connection Configuration | FIP x FIP |
| Fitting Configuration | Straight / Inline Union |
| Connection Type | Threaded |
| Primary Function | Join Two Compatible Male-Threaded Components with a Serviceable Union Connection |
Construction Details
The fitting features a durable lead-free brass body with female pipe-thread connections on both ends and a central union connection.
The two threaded ends connect to compatible male-threaded pipe, nipples, valves, adapters, or other components while the center union allows the assembled piping connection to be separated without rotating the entire piping run.
This serviceable design can simplify installation, equipment replacement, maintenance, and repair compared with a standard one-piece coupling.
Connection Configuration
Female Pipe Thread - Side 1
The first female pipe-thread connection accepts a compatible male-threaded pipe, nipple, valve, adapter, or other piping component.
Female Pipe Thread - Side 2
The opposite female pipe-thread connection accepts the second compatible male-threaded component to complete the inline piping connection.
Union Connection Design
Serviceable Center Connection
The central union connection allows the two sides of the fitting to be separated after installation, helping provide access for maintenance or component replacement.
Straight-Through Configuration
The union maintains a straight piping path while providing a removable connection point between the two threaded sides.
How a FIP x FIP Union Works
A FIP x FIP union joins two compatible male-threaded piping components while providing a connection that can later be separated without rotating the attached piping.
An appropriate thread-sealing method should be applied to the mating male pipe threads before the threaded ends of the union are installed.
After both sides are installed, the central union connection is assembled to complete the inline joint. For future service, the system should be safely depressurized before loosening the union connection.
Connection Reference
| Fitting Style | Connection 1 | Connection 2 | Configuration |
|---|---|---|---|
| Union | Female Pipe Thread | Female Pipe Thread | Straight / Serviceable |
Union vs. Coupling
Union
FIP x FIP
A union provides a serviceable center connection that can be separated without rotating the connected piping, making it useful where future maintenance or removal is expected.
Coupling
FIP x FIP
A standard coupling provides a one-piece straight female-to-female threaded connection without the removable center union connection.
Common Applications
Plumbing & Water Systems
- Compatible potable-water piping
- Residential plumbing systems
- Commercial plumbing systems
- Water distribution piping
- Pump and equipment connections
- Valve installations
Maintenance & General Service
- Agricultural piping systems
- Construction applications
- Industrial water systems
- Pump replacement connections
- Equipment service points
- Compatible general fluid-handling systems
Lead-Free Brass Benefits
Lead-free brass combines the durability and corrosion resistance associated with brass fittings with material construction intended for applications requiring lead-free plumbing components.
Brass unions are useful in piping systems where a durable threaded connection is needed along with convenient access for future maintenance, replacement, or disassembly.
Installation & Selection Considerations
- Confirm both mating components use compatible male pipe threads before ordering.
- Use a thread-sealing method suitable for brass fittings and the intended media.
- Ensure the union connection is properly aligned before final tightening.
- Depressurize the piping system before loosening or separating the union connection.
- Verify pressure, temperature, media, and lead-free application requirements before installation.

Use the Midland Industries catalog to review lead-free brass fitting information, connection styles, dimensional data, and related product details before ordering.
Midland Industries Catalog PDFNeed Help Selecting a Lead-Free Brass Fitting?
Our plumbing, brass fitting, and industrial product specialists can help review your pipe size, FIP connection requirements, union configuration, lead-free material requirements, pressure and temperature requirements, and application before you order.
Frequently Asked Questions
What is a Lead-Free Brass FIP x FIP Union?
It is a straight brass fitting with female pipe-thread connections on both ends and a central union connection that allows the piping joint to be separated for service or maintenance.
What does FIP x FIP mean?
FIP refers to female pipe thread. FIP x FIP means the union has female pipe-thread connections on both ends.
What connects to this union?
Compatible male-threaded pipe, nipples, valves, adapters, pumps, and other piping components can connect to the two female-threaded ends.
What is the advantage of a union over a coupling?
A union can be separated at its center connection, allowing connected piping or equipment to be serviced or removed without rotating the entire piping run.
Does this union change the direction of the piping?
No. This union provides a straight-through inline connection.
What material is this union made from?
This union features lead-free brass construction.
Should thread sealant be used?
Use a thread-sealing method appropriate for brass pipe-thread connections, the transferred media, and the intended application.
Where can I find additional Midland Industries fitting information?
Use the Midland Industries Catalog PDF linked above to review additional product information, fitting configurations, and related Midland Industries products.
Important Ordering & Installation Notes
- Connection configuration is FIP x FIP.
- Both piping connections are female pipe threads.
- The center union connection allows the fitting to be separated for service.
- Depressurize the system before loosening or disconnecting the union.
- Verify lead-free, pressure, temperature, and media requirements before use.